Puuxooraph co



A. M. CARPENTER.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 4, I911.

Patented Oct. 14,1919.

2 SHEETS-SHEET I 1!: COUJH-BA "MAP" 6a., WASHINGTON, n. c.

A. M. CARPENTER.

EXPLOSIVE ENGINE.

APPLICATION FILED AUG. 4, 1917.

Patented Oct. 14, 1919.

nAr-ll c0., WASHINGTON, m c

ALVIN 1VI. CARPENTER, .OF INDIANAPOLIS, INDIANA, ASSIG-NOR OF ONE-HALFTO WILLIAM R. CHAPIN, OF INDIANAPOLIS, INDIANA.

EXPLOSIVEENGINE.

To all whom it may concern:

Be it known that I, ALVIN M. CARPENTER, a citizen of the United States,residing at Indianapolis, Marion county, and State of Indiana,haveinvented and discovered certain new, and useful Improvements inExplosive-Engines, of which the following is a specification.

My invention relates to internal combustion engines and its object is toprovide improved means for controlling the inlet of the explosive gasesto the engine cylinder and the exhaust therefrom by mechanism employinga valve which obviates the objections due to puppet and sleeve valves,which is self-adjusting to its seat and which is connected to drivingmechanism adapted to permit said self-adjusting action of the valve, tosave power in operation and to avoid a binding action of the valve onits seat and insure an even bearing thereon and free operation thereof.

lVith these objects and others in view my invention is embodied inpreferable form in the construction and arrangement herein-' afterdescribed and illustrated in the accompanying drawings.

In these drawings Fig. 1 is a vertical section through two cylindersand. the head of the engine showing my valve improvements appliedthereto and showingthe'piston on the left hand cylinder and the valvethereof in intake position and the piston and valve of the right handcylinder in compression position, the section being taken on the line1-1 of Fig. 5; Fig. 2, a. view similar to Fig. 1 showing the piston andvalve of the right hand cylinder in firing position, the section beingtaken on the line2-2 of Fig. 6; Fig. 3 a sectionon the line 3-3 of Fig.2, showing the piston of the cylinder and the valve thereof at the pointof starting on the compression stroke; Flg. 4;, a plan view partlyinsection on the line H of Figs. 1 and 2; Fig.5, a section on the line 5-5of Figs. land 2'; Fig. 6, a section on the line 66 of Figs. 1 and 2;Fig. 7, a section) on theline 7-7 of Figs. 1, 2 and 3, looking up; Fig.8, asect on on the line 8-8 of Figs. 1, 2 and 3, looking down; Fig. 9, adetail cross section of the valve. and part of itsseat; Flg. 10, a detal top plan view of a valve driving gear; Flg. 11, a detail verticalsection of the gear shown in Fig. 10; Fig. 12, a detail top plan vlew ofSpecification of Letters Patent.

Patented Oct. 14, 1919.

Application filed August 4, 1917. Serial No.-184,450.

one of the valves; Fig. 13, a detail edge view is the crank shaft. Abovethe combustion chamber 7 of the cylinder is mounted a cylinder head 8within which is formed a suitable water jacket and inlet and exhaustpassages for the gas. This cylinder head is adapted to extend along theentire set of cylinders and to be made integral with the frame of theengine.

Each cylinder is provided with a rotary disk valve 9, which is adaptedto be continuously rotated in frictional contact with the-seatingportion 10 of the cylinder head. This seat portion 10 is provided with aseries of ports, four being shown, disposed around the. vertical centralline of each: cylinder, 11 designating the exhaust ports, and the othertwo ports 12 constituting the intake means. The valve 9 is provided withtwo ports which are adapted to register with a pair of exhaust ports anda pair of inlet ports, alternately.

I The stem 13 of the rotary disk valve 9 constitutes a journal ortrunnion extending through the cylindrical bearing portion 1 1 of thehead 8. l

The upper end of the trunnion stem of the valve is provided around itscircumference with a series of gear teeth which are adapted to receivesimilarly formed internal teeth in the hub of a rotary driving dog 15,which is adapted to he slipped over the upper end of the trunnion stem.By means of these teeth the valve is rotated, and also the dog may beadjusted circularly relatively to the valve for the purpose of adjustingthe timing of'the intake and exhaust of each cylinder relatively to thevalve of the other cylinders. The driving dog 15 is provided withdiametrically opposite radial prongs or arms which enter radial slots 24formed in the driving gear 16, by means of which engagement the dog 15is driven. The slots 2 1 are preferably wider than the prongs of the dogin order to permit the latter to have a slight circular play or lostmotion.

' The hub of the gear 16 surrounds a boss 17 1 indicates.

of the cylnidr 'heau afid theievver face' of the gear rests upon theupper face of the cylinder headp The dog 15 rests on the upper face ofsaid boss'17 and its radial arms thereof project above the bottom of thegear, thus permitting of a tilting-movement of the gear at an angle tothe horizontal, with-' out "tilting" the valve By means of the radiallyengaging parts of .the dog and gear,

a free radial movement of said parts relaarrangement affords a floatingdriving con nection between the driving means and valve. The valve stemis thus maintained on a true axis without variation therefrom bydeviations in the alinement of the axis of the gear,- and the valve ispermitted to adjust itself evenly to its seat, its seating pressurebeing determined substantially only by the pressure of the gases; Thisfloating actionis aided by the suspended projection of the arms abovethe base of the gear, this relation assuring that the dog receivespressure only against the rear faces of the. arms, leaving the gear,free to tilt without causing atilting movement and consequent bindingaction of the valve. The driving dog 16 is held rigidly in place on thestem 13 by means of a headed screw 18 which enters the stem. Lappedjoints 20, 21 and 22 are provided at the various junctions of the parts.

In, the construction shown in the draw ings, an inlet port and anexhaust port are provided on each side 'of a diametrical line throughthevalve and valve seat, and the diflerent valves of the respectivecylinders are so arranged relatively that the inlet ports of the valvesof two adjacent cylinders will be disposed on opposite sides of saiddiameter and at the same angles to saiddiameter, whereby said intakeports may directly communicate by a single tributary passage 32 withthemain intake conveying channel 30,- and also a pair of exhaust ports 11may communicate by a single tributary passage 31 with the main exhaustconveying channel 29. The intakepassageways of the end cylinders andalso the intermediate passageways leading from the intake ports passingthrough the exhaust chamber and the "walls of such passageways are thusheated by the exhaust gases, so as to increase the rapid evaporation ofthe combustible charges drawn in.

1 The valve seat 10 is provided with shallow grooves 33 extending fromnear the circumference toward the center, the purpose of said groovesbeing to permit the gases in the combu'stioii chaimber to be partlye'ofiv'e' ed to the outer surface of the floating disk valve .9, betweensaid valve and its seat in order to tend to partly balance the pressurein the combustion chamber of the valve and thus to lessen the frictionalcontact between the valve and its seat so as to thereby decrease thewear between these parts andjamount of power required to .rotate thevalve.

The drivinggears 16 of the respective cylinders are adapted toengagesoasto form a continuous line of meshing gears and they" are driven by apinion 28, at the upper end of a vertical shaft 25, which is provided atits lower end with a worm wheel 26, which is adapted to mesh with a worm27 on the crank shaft 6. In the construction shown,

in which four ports in the valve seat are eme ployed and two ports inthe valve, it is necessary that the worm gears be of such size, numberof teeth and pitch of teeth as to revolve the driving gear 16 once toeach four revolutions of the crank shaft 6.

In Fig. 2, the piston of the left hand cylinder is shown as at the pointoffcompletion of half of the exhaust stroke and this cylinder shows thetwo ports of the disk valve 9 in registry with the two exhaust ports 11in valve seat 10. As the crank 6 revolves 90 from the position indicatedin Fig. 2, for completing the latter half of the exhaust stroke, thedisk valve 9 revolves'22; ,on

Fig. 1,- completing the latter half of the exhaust movement of the valvethe full movement of which requires 45 of the rotation of the valve.starts to move from said 90 position, the ports of the disk valve 9begin to register with the intake ports 12 of the valve seat 10, thepiston, drawingin a'charge of ex plosive mixture through the intakeports, and as the crank shaft moves through the 180? required tocomplete the intake stroke, the rotating valve will move through adistance of 45, and during the compression and firing strokes of thepiston the'valve will move through 90 and then the exhaust ports of thevalve seats will again register with the ports of the valves, until theposition shown in Fig. 2 shall have been reached the second time whenthe valve will have rotated 180 for 720 of the crank shaft.

Having thus described my invention, what I claim is V i 1. In aninternal combustion engine, in combination with an explosion cylinder, ahead therefor, gas ports for said cylinder in said head, a rotary diskvalve in said cylinder below said head having ports adapted to registerwith the head ports, said valve having a stem extending through saidhead, driving means. radially positioned with respect to said' stem andcircularly adjustable means for connecting said stem As the crank shaftbeing non-contacting radially topermit radial and angular play of thedriving means relative to the valve, substantially as described.

2. In an internal combustion engine, in combination with an explosioncylinder having gas ports, a rotary disk valve controlling said ports, avalve stem, a driving gear surrounding said stem, a rotatable drivingdog carried by said stem and bearing on the engine structure above theplane of said gear, said dog having arms extending radially therefromabove the gear, and projecting means on the gear to engage said arms torotate the dog, substantially as described.

3. In an internal combustion engine, in combination with an explosioncylinder having gas ports, a rotary disk valve controlling said ports, arotatable driving member for said valve, a valve stem, a circularlyadjustable dog mounted on said stem and having radial arms to engagesaid rotatable driving member, substantially as described.

4. In an internal combustion engine, in combination with an explosioncylinder having gas ports a ported rotary disk valve controlling saidports, a head mounted above said cylinder, a valve stem journaled insaid head, said stem provided with circumferential teeth, a driving dogdetachably mounted on said stem and having teeth to engage the valvestem teeth, a rotatable driving member, said dog having means projectingfreely radially thereof to enga e said rotatable driving member withoutradial contact with said member, substantially as described.

5. In an internal combustion engine the combination of a cylinder headprovided.

with gas ports, a rotary disk valve for controlling said ports, a bossformed on the cylinder head through which the valve stem extends, a gearmounted to rotate freely on the boss, means for actuating the gear acircularly adjustable radial arm extending from said stem, and meanscarried by said gear for loosely engaging said radial arm, substantiallyas set forth.

6. In an internal combustion engine the combination of a cylinder headprovided with gas ports, a rotatory valve for controlling said ports, agear carried by said cylinder head, means for rotating the gear, anadjustable radial arm carried by the valve, and means carried by thegear for loosely engaging the radial arm to actuate said valve,substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Indianapolisthis 27th day of July, A. D. nineteen hundred and seventeen.

ALVIN M. CARPENTER, [n s.]

Witnesses:

H. P. Doonrrrnn, M. L. SHULER.

Copies of this patent may be obtained for five cents each, by addressingthe 0ommissioner 0! Patents, Washington, D. 0.

